In our case the server is the computer (and program) that permit various clients to connect and thus utilize the IRC service.
If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware.
If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices.
IRC is a multi-user chat system that allows encounters in virtual spaces called "channels" or "rooms" in order to converse privately or in groups.
The concept is supplier of a service (server) and consumer of the same (client).
Chat Zone and the staff administering the server do not have any type of prevention control on the contents and thus cannot be held in anyway responsible for the content of the messages sended by the users via this server.